000			01504nam a2200205Ia 4500
008			220216s9999 xx 000 0 und d
100			_aDas D
245		0	_aEarly establishment and photochemical efficiency of ortets from diverse agroclimates in a cold-prone environment
260			_bRubber Science _c2016
300			_a286-297
520			_aOrtets selected from polyclonal seedling plantations raised in five different regional stations of RRII were planted at Nagrakata in sub-Himalayan West Bengal in order to evaluate their performance under cold stress. Early establishment and growth in the field as well as maximum (Fv/Fm) and effective(Q PSII) quantum yield of PSII during post monsoon, pre-winter and post winter period were measured. Among the ortets tested, growth was better for the ortets collected from Guwahati. The survival of leaves at the top whorl was highest for the ortets RRSD 1 and lowest for RRSA 98. The magnitude of depression in Fv/Fm from post-monsoon to pre-winter was the lowest in RRSD 1. The study indicated that based on initial establishment and chlorophyll fluorescence parameters, RRSD 1 would be a highly potential cold tolerant ortet and RRSA 98 was found to be a highly susceptible ortet in the prevailing cold climate of sub-Himalayan West Bengal.
650			_aCold stress
650			_aCold tolerance
650			_aOrtet
650			_aPhotosynthetic efficiency
700			_aJacob J
700			_aKrishnakumar R
700			_aKumar S
942			_cJS
999			_c57504 _d57504